814
| Years: 810 811 812 813 - 814 - 815 816 817 818 | |
| Decades: 780s 790s 800s - 810s - 820s 830s 840s | |
| Centuries: 8th century - 9th century - 10th century | |
Events
- Louis the Pious succeeds Charlemagne as king of the Franks and Emperor.
- The Bulgarians lay siege before Constantinople.
- Conflict between emperor Leo V and patriarch Nicephorus on the subject of iconoclasm. Leo deposes Nicephorus, Nicephorus excommunicates Leo.
Deaths
- January 28: Charlemagne, king of the Franks and Emperor
- February 18: Angilbert, Frankish politician
- April 13: Krum, khan of Bulgaria (brain haemorrage)